What pipe fitting is this??

[Uncle Saggy]

Are you looking to keep the rod strung for the entire drive or just in transit while fishing?

[Philip-TX]

Might be able to use a NEMA box enclosure, add a conduit (either thread or slip/glued)

[huntinfool]

No clue on that piece.

I'd think you could make some similar with PVC pipe, a couple reducers and a large threaded coupler with a plug. The large threaded coupler would be big enough for the reel.

[eaglegolfj]

That almost looks like some kind of valve lock out device.

[BTLowry]

I am betting that is something custom molded for that particular company that makes the holder.
You might figure out the company and see if they would sell replacement parts

I am sure you could come up with something that would work

[Tmag]

[redleg62]

If it's threaded, I'd say clean out. If not, I'd say coupling

[Boomerang]

You probably want some foam padding in the inside. Driving down the road your rod and reel have a good chance of getting scratched / rubbed with some abrasion. A 4 piece rod can be pulled apart in 2 pieces fully strung with a fly attached and set in a hook holder or eye. It keeps the dust off on most of the remote gravel/dirt roads. Literally takes about 5 seconds to rejoin the sections.

A cool looking tube. I wonder how much heat builds up in travel tubes like that and degradation of your fly line?

[Tmag]

Another with offset fittings.

[Tmag]

Looks like a delivery box used in air delivery systems, we had them at a few of our ready mix plants.

[helibow]

Decided to go ahead and make mine. This is what I came up with. Stores reel as well as rods. The fittings are schedule 40 so it makes it a bit heavier than I want but for its pra tical application just protecting my rod and reel when I'm traveling I think it will work out just fine. Will still have to figure out something a little bit lighter if I'm going to take an eight or nine mile hike up in the mountains to fish a trout stream. Hinged the lid for easy access, reel fits in the lid with foam, then on the very top of the screw out cap leaves room to store a couple of your favorite flies. Everything you need for a quick little getaway.